1.8 mil (0.12 mm) HDPE Pond Liners for Outdoor Fish Ponds, Streams Fountains and Water Gardens Key benefits Durable and flexible HDPE material designed for outdoor ponds, streams, fountains and water gardens. UV and ozone resistant for long term exposure to sunlight and environmental conditions. Puncture and tear resistant and waterproof to prevent leaks and protect pond integrity. Black color helps prevent soil dirt from entering the pond, promoting clearer water and a safer environment for fish and plants. Why this matters Provides a reliable barrier that minimizes sediment ingress and reduces maintenance. Creates a stable base for pond construction and helps extend the life of the pond system. Material and specifications Thickness: 1.8 mil (0.12 mm) Material: density polyethylene (HDPE) Color: Black Applications: Outdoor ponds, streams, fountains and water gardens Easy to use The pond liner provides a flat surface for your garden pond, reducing soil buildup. A layer of rounded pebbles on of the liner will extend the life of the pond. Use scenarios Scenario 1: Backyard koi or other ornamental fish ponds requiring a durable, weather resistant liner. Scenario 2: Garden streams or small waterfall features where a flexible, leak resistant liner is needed. Scenario 3: Water gardens or fountain basins that require a waterproof, low maintenance liner with long term durability.